Hi, I was wondering given a basic simple diffuser design, what types of equations or computer modeling could I use to calculate the downforce it would give at different speeds? I have a program that will calculate the downforce for an aerofoil, but if there is a way to do it for a diffuser that would be fantastic.
Any links or extra info would also be greatly appreciated about diffuser design and modeling.
Diffuser Downforce Calculations?
Started by
mrman_3k
, Jan 20 2005 04:03
5 replies to this topic
Advertisement
#2
Lukin
-
- 1,983 posts
- Joined: January 03
Member
Posted 20 January 2005 - 06:42
I dont know much about it, but the folks at F1 Technical forum do have many topics about CFD and related things. Monstrobolaxa appears to be the head honcho over there but posts here too. He'd be a good place to start.
#3
Welsor#13
-
- 1 posts
- Joined: January 05
New Member
Posted 28 January 2005 - 05:57
Hi,
I would be keen to locate a copy of the program to calculate downforce on aerofoil section. I have 1300cc Clubman race car recently fitted with a full-width 230mm chord aero-section rear spoiler & would love to know the 'stated' downforce at speed.
Thanks in anticipation
'Clubbie from Down-Under'
Brisbane Australia
I would be keen to locate a copy of the program to calculate downforce on aerofoil section. I have 1300cc Clubman race car recently fitted with a full-width 230mm chord aero-section rear spoiler & would love to know the 'stated' downforce at speed.
Thanks in anticipation
'Clubbie from Down-Under'
Brisbane Australia
#4
bern@rd
-
- 604 posts
- Joined: October 04
Member
Posted 28 January 2005 - 15:21
Depenging on the program you could be looking at a price tag of thousands of dollars.Originally posted by Welsor#13
Hi,
I would be keen to locate a copy of the program to calculate downforce on aerofoil section. I have 1300cc Clubman race car recently fitted with a full-width 230mm chord aero-section rear spoiler & would love to know the 'stated' downforce at speed.
Thanks in anticipation
'Clubbie from Down-Under'
Brisbane Australia
I wouldn't necessarily purchase a product of that price range just to make one calculation.
edit: Removed the bit about warezed software, as that could be considered illegal.
#5
blkirk
-
- 319 posts
- Joined: March 00
Member
Posted 28 January 2005 - 17:28
Originally posted by Welsor#13
Hi,
I would be keen to locate a copy of the program to calculate downforce on aerofoil section. I have 1300cc Clubman race car recently fitted with a full-width 230mm chord aero-section rear spoiler & would love to know the 'stated' downforce at speed.
Thanks in anticipation
'Clubbie from Down-Under'
Brisbane Australia
MIT has a freeware airfoil analysis program available called XFOIL (http://raphael.mit.edu/xfoil/ ). I've looked at it some, but I haven't verified any results, so I can't vouch for its accuracy. In other words, your milage may vary.
#6
Paolo
-
- 1,677 posts
- Joined: May 00
Member
Posted 17 February 2005 - 15:09
Whatever the airfoil program says, you'll actually get only a part of the "stated " downforce on your car.
Wings mounted near bodywork act in a considerably different way than wings in free stream. You could even have NO downforce from the wing if it is placed badly enough.
Generally speaking, the greater the distance from the bodywork, the more downforce you'll get.
Wings mounted near bodywork act in a considerably different way than wings in free stream. You could even have NO downforce from the wing if it is placed badly enough.
Generally speaking, the greater the distance from the bodywork, the more downforce you'll get.
